baber/WOPTO huggingface dataset:
Patent GB-639866-A (GB)
Title: Manufacture of copperable polyazo dyestuffs
IPC: C09B35/60
Filed: 1947-08-01
Abstract: Polyazo dyestuffs are manufactured by coupling 1 mol. of a tetrazotized 4 : 41-diamino-3 : 31-dialkoxydiphenyl (in which the alkoxy groups may be substituted) in either order, if desired in the presence of adjuvants such as pyridine, with 1 mol. of an aminoazo dyestuff of the general formula <FORM:0639866/IV (c)/1> (wherein R1 represents an aliphatic, aromatic, araliphatic or alicyclic radical, not bound to the nitrogen atom through a carbonyl group, and the nucleus A may contain further substituents), and with 1 mol. of any hydroxyl-containing coupling component in common use for the production of metallizable azo dyestuffs, or of a monoazo dyestuff of the general formula <FORM:0639866/IV (c)/2> (wherein R2 represents hydrogen or an aliphatic, aromatic, araliphatic or alicyclic radical, not bound to the nitrogen atom through a carbonyl group, and B the radical of any desired diazo compound, including an o-carboxyphenyl radical).  The first coupling component may be one in which R1 is an alkyl group (e.g. methyl, ethyl, propyl, butyl, hexyl or undecyl), an aralkyl group (e.g. benzyl or a homologue thereof), an alicyclic group (e.g. cyclohexyl) or an aryl group (e.g. phenyl or a homologue thereof), or a group carrying one or more substituents such as halogen or a hydroxy, alkoxy, amino, acylamino, carboxyl or sulphonic acid group (e.g. 2-hydroxyethyl, 2 : 3-dihydroxypropyl, 2-methoxyethyl, 2-ethoxyethyl, cyanomethyl, carboxymethyl, 1- or 2-carboxyethyl, 2-sulphoethyl, 4-hydroxyphenyl, 4-methoxyphenyl, 4-ethoxyphenyl, 2- or 4-chlorophenyl, 4-acetylaminophenyl, 4-benzoylaminophenyl, 4-amino-3-sulphophenyl, 3-carboxyphenyl or 3-carboxy-4-hydroxyphenyl).  The other coupling component may be the same as the first or may be a similar dyestuff not containing a carboxyl group in o-position to the azo group, or any of the coupling components named in the parent Specifications.  The products dye natural and regenerated cellulose in blue, grey and black tints which may be after-treated with coppering agents. Examples illustrate the use of dianisidine and 4 : 41-diamino-3 : 31-dicarboxymethoxydiphenyl with certain of the coupling components enumerated above. Specification 597,130 is referred to.
Patent GB-1344198-A (GB)
Title: Gas mixture liquefaction process
IPC: F25J1/02
Filed: 1971-04-19
Abstract: 1344198 Gas liquefaction process ESSO RESEARCH & ENG CO 19 April 1971 [9 Feb 1970 (2)] 21059/71 Heading G4P Cooling of a compressed feed gas, e.g. natural gas stream 2 Fig. 1, to its liquefaction temperature is effected by passage through at least two series-arranged heat exchangers 100, 102, 104, 106 traversed by a multicomponent refrigerant stream in a closed circuit; the feed stream 2 and the refrigerant stream 24 delivered by a compressor 130 being cooled by passage through exchanger 100, the so-cooled feed stream and at least the gaseous phase of the so-cooled refrigerant stream being further cooled in one or more of exchangers 102, 104, 106 traversed by counterflowing liquid refrigerant having been flashed at values 120, 122, 126 and the sovapourized flashed refrigerant being returned through a line 20 to compressor 130. Exchanger 100 may be cooled by a second evaporating refrigerant, e.g. propane in a circuit 75, 76 or by flashing at 280, Fig. 2, liquid refrigerant withdrawn at 270 from a phase separator 234 supplied with partly condensed refrigerant leaving the aftercooler 232 of compressor 230. In a further modification the part-liquid partgaseous refrigerant is separated prior to being cooled in the first exchanger.
Patent GB-1151191-A (GB)
Title: Improvements in or relating to Ventilators
Inventor: FIELDING ERIC
IPC: F24F13/16
Filed: 1965-05-19
Abstract: 1,151,191. Ventilators. COLT VENTILATION & HEATING Ltd. 13 May, 1966 [19 May, 1965], No. 21120/65. Heading F4V. A powered discharge ventilator comprises a base 10 which is attached to a roof, and to which a Venturi-like fan casing is attached, the fan casing being flared at its upper end and coming to a crown 14 and extending outwardly and downwardly to form a flange 15. An impeller 24 is located within the fan casing downstream of the throat 12 thereof, the blades 25 of the impeller 24 being shaped so as to sweep closely a frusto-conical section 31 of the fan casing. The fan casing is covered by a cowl 32 comprising a substantially flat cover portion and a downwardly curved peripheral portion 33. A non-return valve member 41 may be located above the crown 14 of the fan casing which in operation of the ventilator is held in the position shown in chain-dotted outline by air pressure. When the ventilator is not in operation, the valve 41 covers the outlet end of the fan casing and is held there by toggle action by hinge members 45. The air from the trailing edge 29 of the impeller blades 25 is said to escape from the ventilator without turbulence through the outlet passage 34 between the flange 15 of the fan casing and the peripheral portion 33 of the cowl. The ventilator may be rectangular in outline, with rounded corners, or may be circular in outline. In a modification, the frustoconical section 31 of the fan casing may be attached to the impeller blades 25, and may run closely in a gap or a recess formed between adjacent stationary sections of the fan casing.
Patent GB-328863-A (GB)
IPC: A43D25/06
Filed: 1929-07-10
Abstract: 328,863. Walther & Co. Komm.-Ges., H. June 3, 1929, [Convention date]. Electric stoves.-In presses for securing cemented outsoles to lasted shoes, the soleengaging cushion comprises an air or liquid filled pad faced with an electrically heated pad. Each press comprises a receptacle 8, Fig. 2, containing a fluid-filled pad 41. The edge of the receptacle is formed with a flange 8<1> to engage over a bead 42<1> of a cover 42. Between the cover 42 and the pad 41 is a rubber bag 74, Fig. 3, housing electrically-heated elements comprising an asbestos cord 49 wound with thin heating wire with an asbestos covering. The cord 49 is arranged laterally of the pad at the part supporting the forward portion of the shoe, and longitudinally of the pad at the part supporting the heel. The resistance windings are separated by stout insulating cores 71, or are armoured with metal hose or a wire spiral. Asbestos layers 47 are arranged above and below the windings. At the margin is a thick asbestos pad 72, and on the underside an asbestos pad 73. The resistance wire is arranged in two sections, which may be connected in series or in parallel or singly, so that three intensities of heat may be employed. A switch 66, Fig. 2, has four positions, one " off," one with the two windings in series, one with one winding only in the circuit, and one with the two windings in parallel. As applied to a multiple rotary press of the kind shown in Fig. 1, the rotating spindle 1 carrying the presses may house metal rings 55', 55<2> and an axial metal plate 55<3> engaging three brushes arranged to provide the three intensities of heat, each press being connected by a multiple cable with the brushes by a plug 63 and common wiring 58', 58<2>, 58<3>.
Patent GB-374674-A (GB)
Title: Method of preparing imidazolyl-propionic acid from glutamic acid
IPC: C07D233/64
Filed: 1931-07-24
Abstract: The mercurous salt of b --(2-thiolimidazolyl)-propionic acid is produced by adding mercurous sulphate solution to a solution of the acid.ALSO:b -Imidazolylpropionic acid is manufactured by reducing the ester of glutamic acid by means of sodium almagam to the semi-aldehyde of glutamic acid, treating this with a sulphocyanide to produce b -(2-thiolimidazolyl)-propionic acid, and desulphurizing this by the action of an oxidizing agent to yield b -imidazolylpropionic acid.  The product is useful for the preparation of histamine.  In an example, glutamic acid is converted into its ester hydrochloride, which is treated in aqueous alcoholic solution with sodium amalgam at -10 DEG  C., the solution being kept acid with hydrochloric acid.  The product is treated with a solution of potassium or ammonium sulphocyanide, producing b -(2-thiolimidiazolyl)-propionic acid.  This is purified by forming its mercurous salt by addition of mercurous sulphate and decomposing this with hydrogen sulphide, and is suspended in water and treated with hydrogen peroxide, the b -imidazolyl propionic acid produced being purified by forming the barium salt and decomposing this with sulphuric acid. Alternatively, ferric chloride is employed as oxidizing agent, and the b -imidazolylpropionic acid is converted into its phosphotungstate, which is decomposed by barium hydroxide and the acid liberated from the barium salt by means of carbon dioxide followed by sulphuric acid.  The chloroplatinate of the b -imidazolylpropionic acid is also described.
Patent GB-1211478-A (GB)
Title: Dyeing preparations for the production of water-insoluble azo dyestuffs on textile material of aromatic polyesters or triacetyl cellulose
IPC: D06P3/38
Filed: 1968-05-06
Abstract: 1,211,478. Dying aromatic polyesters and triacetyl cellulose. FARBWERKE HOECHST A.G. 6 May, 1968 [5 May, 1967], No. 21280/ 68. Additionto 1,103,028. Heading D1B. Water-insoluble azo dyes are produced on aromatic polyester or triacetyl cellulose by applying a preparation consisting of a) an arylamide of 2,3-hydroxynaphthoic acid or a derivative thereof, b) 4-amino-1-benzene-azonaphthalene or a derivative thereof, c) a watersoluble condensation product of an aromatic hydroxy compound and an aromatic #-methane-sulphonic acid, and d) water, and thereafter diazotising and coupling in situ. To avoid freezing lower (C2-4), aliphatic polyalcohols may be added, and fungicides, e.g. sodium penta-chlorophenolate are optional additives, anti-foaming agents may also be added, the preparations being obtained by grinding or kneading the components together.
Patent GB-320925-A (GB)
Title: Instrument permitting of the superimpression of two different views upon a single film
IPC: G02B27/10
Filed: 1928-07-23
Abstract: 320,925. Soc. des Anciens Etablissements Optis, and Belocca, J. M. S. de. July 23, 1928. Kinematograph apparatus. - In apparatus for photographing objects 0, O<1>, lying in different planes, on the same film f through the agency of a semi-transparent reflector M and a compensating lens L in the path of the reflected rays, the mirror M is adjustable angularly with respect to the lens L. The whole apparatus may be mounted on a ball-and-socket joint and adapted to be fitted to the ordinary taking lens.
Patent GB-174652-A (GB)
Title: Improvements in or relating to fastenings for doors and other purposes
IPC: B60P1/26
Filed: 1920-07-15
Abstract: 174,652. Hollick, W. J. July 15, 1920. Latches, swinging; hook fastenings; fastenings for hinged and sliding doors &c.-A fastening for securing swinging or sliding doors, flaps, &c. or for holding in normal position the body of a tipwagon comprises a securing-member 9 having a hook or other engaging part 7, and capable of being set by a lever 4 operating an eccentric 5 or equivalent into any one of three positions so that the movable part 8-such as the swing door of a tip-wagon-may be secured, as shown in full lines, or released, as shown in dotted lines; while in a third position, shown in chain lines, corresponding to which the actuating lever 4 is temporarily secured, the fastening lies in the path of the moving part, while permitting it to pass into the closing position. The member 9 is gravity or spring-controlled, and moves between adjustable stops 10, 11. The operating-handle 4 may be held in the desired position by resilient engagement between a tooth 12 therein and a fixed rock 13.
Patent GB-299547-A (GB)
Title: A new or improved method of assembling and fixing a pair of whole steel vehicle wheel stampings and apparatus employed therefor
IPC: B60B31/00
Filed: 1927-08-13
Abstract: 299,547. Owen, A. E., and Downs, R. W. Aug. 13, 1927. Wheels.-In building a wheel ot the kind comprising two stampings a of spider form with vee-grooves a<1> adjacent their edges into which the edges of channel-section connecting-strips f are folded, the stampings are temporarily connected by forcing a portion only of a connecting- strip into the curved portion of the grooves adjacent the wheel centre. The apparatus shown comprises an anvil c with a recess e for supporting the channel-section connecting-strip f embracing the vee-grooves in the stampings a, and a punch g for pressing a portion of the strip into the groove. The punch may have a renewable working-face h. Specification 300,308 is referred to.
Patent GB-834544-A (GB)
Title: Improvements in and relating to electrical filters
Inventor: LAWTON JOHN
IPC: H03H9/54
Filed: 1955-07-22
Abstract: 834,544. Band-illumination filters. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. July 11, 1956 [July 22, 1955], No. 21349/55. Class 40 (8). A band-elimination filter comprises a lowpass network and a high-pass network connected in parallel, with a piezo-electric crystal arranged to produce an elimination band in one of the networks. The low-pass network 11 and high-pass network 12 are of conventional design and together provide an all-pass transmission characteristic between input terminals 13, 14 and output terminals 15, 16. The elimination band is provided by a crystal 20 in the low-pass network 11, shunt capacitance 19 being adjusted to compensate the capacitance of the crystal. The cut-off frequencies of the networks are arranged to be co-incident at a frequency such that the network 11 has a high degree of attenuation at any undesired overtone frequencies of the crystal. The Provisional Specification describes a circuit comprising a band-pass network and a complementary band-stop network connected in parallel to provide an all-pass overall characteristic in which a narrow elimination band is provided by a crystal arranged as a shunt element in the band-pass network. Such a circuit may be used to eliminate the effects of coupled resonances both below and above the fundamental resonance of the crystal.
Patent GB-802129-A (GB)
Title: Inactivation of catalyst in molecular rearrangement reactions of fatty esters
IPC: C11C3/10
Filed: 1956-07-11
Abstract: In the catalytic interesterification of fatty ester mixtures with an alkaline-reacting catalyst, the catalyst is inactivated by treating the ester-catalyst mixture with water and a substance which will yield by reaction with the catalyst a salt having a polyvalent anion and forming a buffered aqueous solution in the range pH 9.5-10.5. The inactivating substance may be carbon dioxide, sodium bicarbonate, phosphoric acid, sodium dihydrogen phosphate, or a mixture of such substance, and is generally added either before or simultaneously with the water.  The mixture is vigorously agitated afterwards, then optionally degasified, particularly if hydrogen gas is produced by inactivation of a metallic catalyst, e.g. a sodium-potassium alloy, heated to a temperature such that all the components are melted, usually 120-150 DEG  F., and the rearranged ester separated from the soapstock and salts formed, suitably by centrifugation. Specifications 574,807, 590,737, 604,136, 616,190, 680,703, [Group I], 779,464 and 785,147 are referred to.
Patent GB-387013-A (GB)
Title: Improvement in and relating to railway signalling
IPC: B61L3/10
Filed: 1932-04-27
Abstract: 387,013. Railway signalling. SHAW, H. A. M., 1, Station Terrace, Thornaby-on- Tees, and SHAW, W. H., 167, Holgate Road, York. April 27, 1932, No. 21498/31. [Class 105.] Relates to apparatus in which cab signals are given by the passage of locomotive contact shoes over track ramps, one or other of which is energized, according to the setting of the wayside signal, when the locomotive is on a section of track having one rail insulated and in circuit with the ramp. According to the invention, a signal, giving warning of the approach to the signal ramps, is initiated by a contact at the entrance to the section and continues in action until the ramp signal is given. Supplemental advance audible or lamp signals on the track may be included in the ramp circuit to serve as fog repeaters. The single insulated rail length 1 is connected through a battery 4 and selecting arm 7 of a semaphore signal 10 to one or the other fog repeater track lamp R5 or G5 and ramp R13 or G13. The ramps R13, G13 are engaged by shoes R15, G15 on the locomotive which are connected with relays R19, G19. If the semaphore is at danger the fog repeater lamp R5 and the locomotive relay R19 are energized, when the shoes engage the ramps, over the circuit from rail 1, through battery 4, selector arm 7 on contact R6, lamp R5, ramp R13, shoe R15, wires h<1>, h2, relay R19, wires l<1>, r, g, f<2>, the locomotive frame and back to the rail 1. The armature of relay R19 is mechanically held up by the spring-pressed detent arm R37 to maintain contact R25 against studs R26, R27, which respectively light duplicate red lamps R28 and energize a motor 29 from the locomotive battery 30. The motor 29 actuates flyer arms 31 to sound a gong 32 and worm gearing 33, 34, which in due course depresses the detent arm R37 by a pin 35 to release the armature whereby the apparatus returns to normal. If the semaphore 10 is at clear then in a similar manner fog repeater track lamp G5 is lit while the locomotive is over the ramps R13, G13, and a sustained signal is given on the locomotive by the gong 32 and duplicate green lamps G28. The switch 16 is reversed, as by a connection with the engine reversing gear, when the locomotive travels tender first. When a locomotive contact W17 engages contact W18 a warning of the approach to the signals is given by the energization of a relay W39 from battery 30 over wire q, support strap 24, armature G20, contact G22, wire c, contact R22 (insulated from its armature R20), wire b, relay W39, wire a, contacts W17, W18, insulated rail 1, locomotive frame, and wires f<2>, g. Relay W39 attracts its armature W41 and is held by a stick circuit which includes warning lamps W40. The attraction of relay R19 or G19 when the ramps are reached breaks this stick circuit. Additionally a steam whistle is mechanically actuated when a bell-crank-lever 'engages a ramp so that a warning signal is still given even if the electrical apparatus fails.
Patent GB-1432944-A (GB)
Title: Distillation or absorption columns
IPC: B01D3/22
Filed: 1972-05-09
Abstract: 1432944 Gas/liquid contact column HYDRONYL Ltd 30 April 1973 [9 May 1972 31 May 1972] 21520/72 and 25423/72 Heading B1R A distillation or absorption column comprises a vertically disposed cylinder and a plurality of horizontal gas/liquid contact trays with downcomers therebetween, the downcomers being in the form of a plate in engagement with the column inner wall, the lower edge of the or each plate being shaped so as to be generally curved in plan and/or elevation or alternatively providing the lower edge or edges with baffles so as to achieve a common residence time for liquid on the next lowermost tray. The lower edges of the plates which are curved in plan view preferably engage the column wall at a right angle and conform to an arc of a circle. In the embodiment in Fig. 7 (not shown) the general curvature in elevation of the plate is produced by a horizontal centre portion with two side portions extending upwardly. The lower part of the plate may contain a horizontal step portion or have an adjustable position to control the downunder flow clearance. The baffles 27 are preferably of aerofoil section.
Patent GB-323246-A (GB)
Title: Method of and apparatus for the dyeing or analogous treatment in wound form of yarns and threads
IPC: D01D10/04
Filed: 1928-07-25
Abstract: 323,246. Brandwood, J. July 25, 1928. Treating substances with liquids. - Yarns or threads wound in the form of a tubular package are placed in a container having a perforated cylindrical wall, and centrifugal action upon the liquid during rotation maintains a circular flow through the yarns and the perforated wall. The perforated cylindrical wall 2 of nickel or other non-corrodible material is attached to a heavy metal annular base 1 secured to a central metal boss 6 which receives the end of the driving spindle 9. The perforated spool 13 carrying the yarns x is held in recesses 10, 12 in the base 1. and annular cover 11; the recesses may have rubber or felt washers fixed by adhesives or screws. The diameter of the wall 2 is such that a space 14 is left between the yarns and the wall. A key 8 carried by the spindle 9 rests in a slot in the boss 6 to make a driving connection. The apparatus is arranged in a vat 18 which contains the liquor to be used for dyeing or other treatment of the yarns, the liquid level being above the cover 11. During rotation of the apparatus the liquid passes from the inside of the spool, through the yarns, the space 14, and the wall 2; a constant circulation of the liquid is maintained while the apparatus is working. The vat may be provided with a number of spindles, and perforated casings may be employed to contain two or more spools. Specification 311,803 is referred to.
Patent GB-212832-A (GB)
Title: Improvements in and relating to loose leaf binders and the like
IPC: B42F13/30
Filed: 1923-08-27
Abstract: 212,832. Marks, J. G. de Jetley-. Aug. 27, 1923. Post files; covers; boxes and cabinets.-In a loose-leaf binder as described in Specification 141,332, the back 18 is held vertical by a bar 11 mounted in guides 12 so as to slidably engage the bent portion of the spring wire bridge-piece 7, which fits into the ends of the tubular posts 6. The file may be of the box form shown, or may have a loose cover of the known type.
Patent GB-805880-A (GB)
Title: Improvements in or relating to the production of barium alloy
IPC: C22C28/00
Filed: 1957-07-09
Abstract: Barium - containing alloys, particularly for use in oxide-coated cathodes in discharge tubes or as getters, are produced by adding nickel or cobalt or nickeltungsten alloy in powder form to barium peroxide and heating in an atmosphere of hydrogen, e.g. at about 800 DEG C.